8218375

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1$

素因数の和:208

約数の個数: 32

約数和(自身を含む): 11531520

約数和(自身を除く): 3313145

約数列:

[1, 5, 11, 25, 43, 55, 125, 139, 215, 275, 473, 695, 1075, 1375, 1529, 2365, 3475, 5375, 5977, 7645, 11825, 17375, 29885, 38225, 59125, 65747, 149425, 191125, 328735, 747125, 1643675, 8218375]

約数ペア:

[(1, 8218375), (5, 1643675), (11, 747125), (25, 328735), (43, 191125), (55, 149425), (125, 65747), (139, 59125), (215, 38225), (275, 29885), (473, 17375), (695, 11825), (1075, 7645), (1375, 5977), (1529, 5375), (2365, 3475)]